25421012 has 12 divisors (see below), whose sum is σ = 46828320. Its totient is φ = 12041496.

The previous prime is 25420979. The next prime is 25421021. The reversal of 25421012 is 21012452.

It is a super-2 number, since 2×25421012² = 1292455702208288, which contains 22 as substring.

It is a congruent number.

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, 167168 + ... + 167319.

It is an arithmetic number, because the mean of its divisors is an integer number (3902360).

Almost surely, 2^25421012 is an apocalyptic number.

It is an amenable number.

25421012 is a deficient number, since it is larger than the sum of its proper divisors (21407308).

25421012 is a wasteful number, since it uses less digits than its factorization.

25421012 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 334510 (or 334508 counting only the distinct ones).

The product of its (nonzero) digits is 160, while the sum is 17.

The square root of 25421012 is about 5041.9254258666. The cubic root of 25421012 is about 294.0340405153.

Adding to 25421012 its reverse (21012452), we get a palindrome (46433464).

The spelling of 25421012 in words is "twenty-five million, four hundred twenty-one thousand, twelve".