25251145424 has 40 divisors (see below), whose sum is σ = 51065035200. Its totient is φ = 12073369088.

The previous prime is 25251145357. The next prime is 25251145427. The reversal of 25251145424 is 42454115252.

It is a super-2 number, since 2×25251145424² (a number of 22 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (25251145427) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1869704 + ... + 1883160.

It is an arithmetic number, because the mean of its divisors is an integer number (1276625880).

Almost surely, 2^25251145424 is an apocalyptic number.

It is an amenable number.

25251145424 is an abundant number, since it is smaller than the sum of its proper divisors (25813889776).

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

25251145424 is a wasteful number, since it uses less digits than its factorization.

25251145424 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 18587 (or 18581 counting only the distinct ones).

The product of its digits is 64000, while the sum is 35.

The spelling of 25251145424 in words is "twenty-five billion, two hundred fifty-one million, one hundred forty-five thousand, four hundred twenty-four".