25133031 has 72 divisors (see below), whose sum is σ = 47911920. Its totient is φ = 12972960.

The previous prime is 25132967. The next prime is 25133047. The reversal of 25133031 is 13033152.

It is not a de Polignac number, because 25133031 - 2⁶ = 25132967 is a prime.

It is a super-2 number, since 2×25133031² = 1263338494493922, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 25132995 and 25133013.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (25133051) by changing a digit.

It is a polite number, since it can be written in 71 ways as a sum of consecutive naturals, for example, 160005 + ... + 160161.

Almost surely, 2^25133031 is an apocalyptic number.

25133031 is a gapful number since it is divisible by the number (21) formed by its first and last digit.

25133031 is a deficient number, since it is larger than the sum of its proper divisors (22778889).

25133031 is a wasteful number, since it uses less digits than its factorization.

25133031 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 202 (or 178 counting only the distinct ones).

The product of its (nonzero) digits is 270, while the sum is 18.

The square root of 25133031 is about 5013.2854496827. The cubic root of 25133031 is about 292.9195032551.

Adding to 25133031 its reverse (13033152), we get a palindrome (38166183).

The spelling of 25133031 in words is "twenty-five million, one hundred thirty-three thousand, thirty-one".