25467321572 has 36 divisors (see below), whose sum is σ = 55986020160. Its totient is φ = 9922331760.

The previous prime is 25467321571. The next prime is 25467321601. The reversal of 25467321572 is 27512376452.

It is a Harshad number since it is a multiple of its sum of digits (44).

It is not an unprimeable number, because it can be changed into a prime (25467321571) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 3755072 + ... + 3761847.

Almost surely, 2^25467321572 is an apocalyptic number.

25467321572 is a gapful number since it is divisible by the number (22) formed by its first and last digit.

It is an amenable number.

25467321572 is an abundant number, since it is smaller than the sum of its proper divisors (30518698588).

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

25467321572 is a wasteful number, since it uses less digits than its factorization.

25467321572 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7516952 (or 7516939 counting only the distinct ones).

The product of its digits is 705600, while the sum is 44.

The spelling of 25467321572 in words is "twenty-five billion, four hundred sixty-seven million, three hundred twenty-one thousand, five hundred seventy-two".