153252405 has 20 divisors (see below), whose sum is σ = 274719852. Its totient is φ = 81734400.

The previous prime is 153252401. The next prime is 153252413. The reversal of 153252405 is 504252351.

It is a happy number.

153252405 is a `hidden beast` number, since 1 + 5 + 3 + 252 + 405 = 666.

It can be written as a sum of positive squares in 2 ways, for example, as 90668484 + 62583921 = 9522^2 + 7911^2 .

It is not a de Polignac number, because 153252405 - 2² = 153252401 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (153252401) by changing a digit.

It is a polite number, since it can be written in 19 ways as a sum of consecutive naturals, for example, 188796 + ... + 189605.

Almost surely, 2^153252405 is an apocalyptic number.

153252405 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

153252405 is a deficient number, since it is larger than the sum of its proper divisors (121467447).

153252405 is an equidigital number, since it uses as much as digits as its factorization.

153252405 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 378418 (or 378409 counting only the distinct ones).

The product of its (nonzero) digits is 6000, while the sum is 27.

The square root of 153252405 is about 12379.5155397940. The cubic root of 153252405 is about 535.1420765703.

The spelling of 153252405 in words is "one hundred fifty-three million, two hundred fifty-two thousand, four hundred five".