25145772 has 12 divisors (see below), whose sum is σ = 58673496. Its totient is φ = 8381920.

The previous prime is 25145767. The next prime is 25145773. The reversal of 25145772 is 27754152.

It is a tau number, because it is divible by the number of its divisors (12).

It is not an unprimeable number, because it can be changed into a prime (25145773) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1047729 + ... + 1047752.

It is an arithmetic number, because the mean of its divisors is an integer number (4889458).

Almost surely, 2^25145772 is an apocalyptic number.

It is an amenable number.

25145772 is an abundant number, since it is smaller than the sum of its proper divisors (33527724).

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

25145772 is a wasteful number, since it uses less digits than its factorization.

25145772 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2095488 (or 2095486 counting only the distinct ones).

The product of its digits is 19600, while the sum is 33.

The square root of 25145772 is about 5014.5560122507. The cubic root of 25145772 is about 292.9689926690.

The spelling of 25145772 in words is "twenty-five million, one hundred forty-five thousand, seven hundred seventy-two".