25551465 has 32 divisors (see below), whose sum is σ = 42681600. Its totient is φ = 13036800.

The previous prime is 25551451. The next prime is 25551499. The reversal of 25551465 is 56415552.

It is not a de Polignac number, because 25551465 - 2¹² = 25547369 is a prime.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 65491 + ... + 65879.

It is an arithmetic number, because the mean of its divisors is an integer number (1333800).

Almost surely, 2^25551465 is an apocalyptic number.

It is an amenable number.

25551465 is a deficient number, since it is larger than the sum of its proper divisors (17130135).

25551465 is a wasteful number, since it uses less digits than its factorization.

25551465 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 577.

The product of its digits is 30000, while the sum is 33.

The square root of 25551465 is about 5054.8456949743. The cubic root of 25551465 is about 294.5361474055.

The spelling of 25551465 in words is "twenty-five million, five hundred fifty-one thousand, four hundred sixty-five".