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30725325 = 345215173
BaseRepresentation
bin111010100110…
…1010011001101
32010211000020000
41311031103031
530331202300
63014314513
7522106131
oct165152315
963730200
1030725325
1116386434
12a358a39
13649a187
14411b3c1
152a6dc00
hex1d4d4cd

30725325 has 30 divisors (see below), whose sum is σ = 56917674. Its totient is φ = 16385760.

The previous prime is 30725291. The next prime is 30725333. The reversal of 30725325 is 52352703.

It can be written as a sum of positive squares in 3 ways, for example, as 7193124 + 23532201 = 2682^2 + 4851^2 .

It is not a de Polignac number, because 30725325 - 27 = 30725197 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 an unprimeable number.

It is a polite number, since it can be written in 29 ways as a sum of consecutive naturals, for example, 5562 + ... + 9611.

Almost surely, 230725325 is an apocalyptic number.

It is an amenable number.

30725325 is a deficient number, since it is larger than the sum of its proper divisors (26192349).

30725325 is a wasteful number, since it uses less digits than its factorization.

30725325 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 15195 (or 15181 counting only the distinct ones).

The product of its (nonzero) digits is 6300, while the sum is 27.

The square root of 30725325 is about 5543.0429368714. The cubic root of 30725325 is about 313.2075063159.

The spelling of 30725325 in words is "thirty million, seven hundred twenty-five thousand, three hundred twenty-five".

Divisors: 1 3 5 9 15 25 27 45 75 81 135 225 405 675 2025 15173 45519 75865 136557 227595 379325 409671 682785 1137975 1229013 2048355 3413925 6145065 10241775 30725325