25251772 has 48 divisors (see below), whose sum is σ = 54839232. Its totient is φ = 9907200.

The previous prime is 25251767. The next prime is 25251773. The reversal of 25251772 is 27715252.

It is a Smith number, since the sum of its digits (31) coincides with the sum of the digits of its prime factors.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (25251773) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 62772 + ... + 63172.

It is an arithmetic number, because the mean of its divisors is an integer number (1142484).

Almost surely, 2^25251772 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 25251772, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (27419616).

25251772 is an abundant number, since it is smaller than the sum of its proper divisors (29587460).

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

25251772 is a wasteful number, since it uses less digits than its factorization.

25251772 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 598 (or 596 counting only the distinct ones).

The product of its digits is 9800, while the sum is 31.

The square root of 25251772 is about 5025.1141280572. The cubic root of 25251772 is about 293.3800780647.

It can be divided in two parts, 252 and 51772, that multiplied together give a square (13046544 = 3612²).

The spelling of 25251772 in words is "twenty-five million, two hundred fifty-one thousand, seven hundred seventy-two".