25455642 has 16 divisors (see below), whose sum is σ = 51379680. Its totient is φ = 8407152.

The previous prime is 25455631. The next prime is 25455653. The reversal of 25455642 is 24655452.

25455642 is nontrivially palindromic in base 5.

It is an interprime number because it is at equal distance from previous prime (25455631) and next prime (25455653).

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, 18808 + ... + 20115.

It is an arithmetic number, because the mean of its divisors is an integer number (3211230).

Almost surely, 2^25455642 is an apocalyptic number.

25455642 is an abundant number, since it is smaller than the sum of its proper divisors (25924038).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

25455642 is a wasteful number, since it uses less digits than its factorization.

25455642 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 39037.

The product of its digits is 48000, while the sum is 33.

The square root of 25455642 is about 5045.3584610016. The cubic root of 25455642 is about 294.1674967631.

The spelling of 25455642 in words is "twenty-five million, four hundred fifty-five thousand, six hundred forty-two".