25122550 has 12 divisors (see below), whose sum is σ = 46728036. Its totient is φ = 10049000.

The previous prime is 25122547. The next prime is 25122551. The reversal of 25122550 is 5522152.

It is a super-2 number, since 2×25122550² = 1262285037005000, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (25122551) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 251176 + ... + 251275.

It is an arithmetic number, because the mean of its divisors is an integer number (3894003).

Almost surely, 2^25122550 is an apocalyptic number.

25122550 is a deficient number, since it is larger than the sum of its proper divisors (21605486).

25122550 is a wasteful number, since it uses less digits than its factorization.

25122550 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 502463 (or 502458 counting only the distinct ones).

The product of its (nonzero) digits is 1000, while the sum is 22.

The square root of 25122550 is about 5012.2400181955. The cubic root of 25122550 is about 292.8787797390.

It can be divided in two parts, 251 and 22550, that added together give a square (22801 = 151²).

The spelling of 25122550 in words is "twenty-five million, one hundred twenty-two thousand, five hundred fifty".