25426556 has 6 divisors (see below), whose sum is σ = 44496480. Its totient is φ = 12713276.

The previous prime is 25426553. The next prime is 25426559. The reversal of 25426556 is 65562452.

It is an interprime number because it is at equal distance from previous prime (25426553) and next prime (25426559).

It is a super-2 number, since 2×25426556² = 1293019500042272, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (25426553) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 3178316 + ... + 3178323.

It is an arithmetic number, because the mean of its divisors is an integer number (7416080).

Almost surely, 2^25426556 is an apocalyptic number.

It is an amenable number.

25426556 is a deficient number, since it is larger than the sum of its proper divisors (19069924).

25426556 is a wasteful number, since it uses less digits than its factorization.

25426556 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6356643 (or 6356641 counting only the distinct ones).

The product of its digits is 72000, while the sum is 35.

The square root of 25426556 is about 5042.4751858586. The cubic root of 25426556 is about 294.0554139921.

The spelling of 25426556 in words is "twenty-five million, four hundred twenty-six thousand, five hundred fifty-six".