25055515 has 8 divisors (see below), whose sum is σ = 30101328. Its totient is φ = 20021280.

The previous prime is 25055491. The next prime is 25055557. The reversal of 25055515 is 51555052.

It is a happy number.

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

It is not a de Polignac number, because 25055515 - 2¹⁵ = 25022747 is a prime.

It is a Duffinian number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2944 + ... + 7666.

It is an arithmetic number, because the mean of its divisors is an integer number (3762666).

Almost surely, 2^25055515 is an apocalyptic number.

25055515 is a deficient number, since it is larger than the sum of its proper divisors (5045813).

25055515 is a wasteful number, since it uses less digits than its factorization.

25055515 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5789.

The product of its (nonzero) digits is 6250, while the sum is 28.

The square root of 25055515 is about 5005.5484215019. The cubic root of 25055515 is about 292.6180496058.

The spelling of 25055515 in words is "twenty-five million, fifty-five thousand, five hundred fifteen".