25121052 has 108 divisors (see below), whose sum is σ = 71649760. Its totient is φ = 7413120.

The previous prime is 25121011. The next prime is 25121093. The reversal of 25121052 is 25012152.

It is an interprime number because it is at equal distance from previous prime (25121011) and next prime (25121093).

It is a super-3 number, since 3×25121052³ (a number of 23 digits) contains 333 as substring.

It is a Harshad number since it is a multiple of its sum of digits (18).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 35 ways as a sum of consecutive naturals, for example, 317949 + ... + 318027.

Almost surely, 2^25121052 is an apocalyptic number.

25121052 is a gapful number since it is divisible by the number (22) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 25121052, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (35824880).

25121052 is an abundant number, since it is smaller than the sum of its proper divisors (46528708).

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

25121052 is a wasteful number, since it uses less digits than its factorization.

25121052 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 184 (or 168 counting only the distinct ones).

The product of its (nonzero) digits is 200, while the sum is 18.

The square root of 25121052 is about 5012.0905817832. The cubic root of 25121052 is about 292.8729583935.

Subtracting from 25121052 its reverse (25012152), we obtain a square (108900 = 330²).

The spelling of 25121052 in words is "twenty-five million, one hundred twenty-one thousand, fifty-two".