25451012 has 24 divisors (see below), whose sum is σ = 46222176. Its totient is φ = 12253248.

The previous prime is 25451011. The next prime is 25451053. The reversal of 25451012 is 21015452.

It is not an unprimeable number, because it can be changed into a prime (25451011) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 11543 + ... + 13569.

It is an arithmetic number, because the mean of its divisors is an integer number (1925924).

Almost surely, 2^25451012 is an apocalyptic number.

It is an amenable number.

25451012 is a deficient number, since it is larger than the sum of its proper divisors (20771164).

25451012 is a wasteful number, since it uses less digits than its factorization.

25451012 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2147 (or 2145 counting only the distinct ones).

The product of its (nonzero) digits is 400, while the sum is 20.

The square root of 25451012 is about 5044.8996025689. The cubic root of 25451012 is about 294.1496607945.

Adding to 25451012 its reverse (21015452), we get a palindrome (46466464).

The spelling of 25451012 in words is "twenty-five million, four hundred fifty-one thousand, twelve".