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152557025 = 5212015081
BaseRepresentation
bin10010001011111…
…01010111100001
3101122001200220012
421011331113201
5303023311100
623045454305
73531466445
oct1105752741
9348050805
10152557025
1179129395
1243111395
13257b5a3a
1416392825
15d5d7135
hex917d5e1

152557025 has 12 divisors (see below), whose sum is σ = 189365484. Its totient is φ = 121920000.

The previous prime is 152557021. The next prime is 152557037. The reversal of 152557025 is 520755251.

It can be written as a sum of positive squares in 6 ways, for example, as 65918161 + 86638864 = 8119^2 + 9308^2 .

It is not a de Polignac number, because 152557025 - 22 = 152557021 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 152556982 and 152557000.

It is not an unprimeable number, because it can be changed into a prime (152557021) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 27485 + ... + 32565.

It is an arithmetic number, because the mean of its divisors is an integer number (15780457).

Almost surely, 2152557025 is an apocalyptic number.

It is an amenable number.

152557025 is a deficient number, since it is larger than the sum of its proper divisors (36808459).

152557025 is a wasteful number, since it uses less digits than its factorization.

152557025 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6292 (or 6287 counting only the distinct ones).

The product of its (nonzero) digits is 17500, while the sum is 32.

The square root of 152557025 is about 12351.3976941883. The cubic root of 152557025 is about 534.3314501176.

The spelling of 152557025 in words is "one hundred fifty-two million, five hundred fifty-seven thousand, twenty-five".

Divisors: 1 5 25 1201 5081 6005 25405 30025 127025 6102281 30511405 152557025