25149772 has 24 divisors (see below), whose sum is σ = 45341856. Its totient is φ = 12200448.

The previous prime is 25149743. The next prime is 25149791. The reversal of 25149772 is 27794152.

It is a super-2 number, since 2×25149772² = 1265022063303968, which contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 19953 + ... + 21175.

It is an arithmetic number, because the mean of its divisors is an integer number (1889244).

Almost surely, 2^25149772 is an apocalyptic number.

It is an amenable number.

25149772 is a deficient number, since it is larger than the sum of its proper divisors (20192084).

25149772 is a wasteful number, since it uses less digits than its factorization.

25149772 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1377 (or 1375 counting only the distinct ones).

The product of its digits is 35280, while the sum is 37.

The square root of 25149772 is about 5014.9548352901. The cubic root of 25149772 is about 292.9845262789.

It can be divided in two parts, 25149 and 772, that added together give a square (25921 = 161²).

The spelling of 25149772 in words is "twenty-five million, one hundred forty-nine thousand, seven hundred seventy-two".