25349031 has 24 divisors (see below), whose sum is σ = 38518480. Its totient is φ = 16656192.

The previous prime is 25349003. The next prime is 25349039. The reversal of 25349031 is 13094352.

It is not a de Polignac number, because 25349031 - 2¹⁰ = 25348007 is a prime.

It is a super-2 number, since 2×25349031² = 1285146745277922, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 25348986 and 25349004.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (25349039) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 17025 + ... + 18453.

Almost surely, 2^25349031 is an apocalyptic number.

25349031 is a deficient number, since it is larger than the sum of its proper divisors (13169449).

25349031 is an equidigital number, since it uses as much as digits as its factorization.

25349031 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1517 (or 1505 counting only the distinct ones).

The product of its (nonzero) digits is 3240, while the sum is 27.

The square root of 25349031 is about 5034.7821204100. The cubic root of 25349031 is about 293.7562536167.

It can be divided in two parts, 253 and 49031, that added together give a square (49284 = 222²).

The spelling of 25349031 in words is "twenty-five million, three hundred forty-nine thousand, thirty-one".