25155530 has 8 divisors (see below), whose sum is σ = 45279972. Its totient is φ = 10062208.

The previous prime is 25155527. The next prime is 25155547. The reversal of 25155530 is 3555152.

It can be written as a sum of positive squares in 2 ways, for example, as 20948929 + 4206601 = 4577^2 + 2051^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a self number, because there is not a number n which added to its sum of digits gives 25155530.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1257767 + ... + 1257786.

Almost surely, 2^25155530 is an apocalyptic number.

25155530 is a deficient number, since it is larger than the sum of its proper divisors (20124442).

25155530 is a wasteful number, since it uses less digits than its factorization.

25155530 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2515560.

The product of its (nonzero) digits is 3750, while the sum is 26.

The square root of 25155530 is about 5015.5288853719. The cubic root of 25155530 is about 293.0068840186.

The spelling of 25155530 in words is "twenty-five million, one hundred fifty-five thousand, five hundred thirty".