25201428 has 24 divisors (see below), whose sum is σ = 67204032. Its totient is φ = 7200384.

The previous prime is 25201427. The next prime is 25201439. The reversal of 25201428 is 82410252.

It is a super-2 number, since 2×25201428² = 1270223946478368, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 25201398 and 25201407.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (25201427) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 149925 + ... + 150092.

It is an arithmetic number, because the mean of its divisors is an integer number (2800168).

Almost surely, 2^25201428 is an apocalyptic number.

25201428 is a gapful number since it is divisible by the number (28) formed by its first and last digit.

It is an amenable number.

25201428 is an abundant number, since it is smaller than the sum of its proper divisors (42002604).

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

25201428 is a wasteful number, since it uses less digits than its factorization.

25201428 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 300031 (or 300029 counting only the distinct ones).

The product of its (nonzero) digits is 1280, while the sum is 24.

The square root of 25201428 is about 5020.1023893941. The cubic root of 25201428 is about 293.1849795049.

The spelling of 25201428 in words is "twenty-five million, two hundred one thousand, four hundred twenty-eight".