825890031 has 6 divisors (see below), whose sum is σ = 1192952280. Its totient is φ = 550593348.

The previous prime is 825890027. The next prime is 825890033. The reversal of 825890031 is 130098528.

It is not a de Polignac number, because 825890031 - 2² = 825890027 is a prime.

It is a super-2 number, since 2×825890031² = 1364188686610361922, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (825890033) 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, 45882771 + ... + 45882788.

It is an arithmetic number, because the mean of its divisors is an integer number (198825380).

Almost surely, 2^825890031 is an apocalyptic number.

825890031 is a deficient number, since it is larger than the sum of its proper divisors (367062249).

825890031 is a wasteful number, since it uses less digits than its factorization.

825890031 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 91765565 (or 91765562 counting only the distinct ones).

The product of its (nonzero) digits is 17280, while the sum is 36.

The square root of 825890031 is about 28738.3025072811. The cubic root of 825890031 is about 938.2258792143.

It can be divided in two parts, 8258 and 90031, that added together give a palindrome (98289).

The spelling of 825890031 in words is "eight hundred twenty-five million, eight hundred ninety thousand, thirty-one".