25331481 has 48 divisors (see below), whose sum is σ = 44815680. Its totient is φ = 14091840.

The previous prime is 25331477. The next prime is 25331497. The reversal of 25331481 is 18413352.

It is a happy number.

It is not a de Polignac number, because 25331481 - 2² = 25331477 is a prime.

It is a super-2 number, since 2×25331481² = 1283367859306722, which contains 22 as substring.

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

It is not an unprimeable number, because it can be changed into a prime (25331401) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 54010 + ... + 54476.

It is an arithmetic number, because the mean of its divisors is an integer number (933660).

Almost surely, 2^25331481 is an apocalyptic number.

25331481 is a gapful number since it is divisible by the number (21) formed by its first and last digit.

It is an amenable number.

25331481 is a deficient number, since it is larger than the sum of its proper divisors (19484199).

25331481 is a wasteful number, since it uses less digits than its factorization.

25331481 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 531 (or 518 counting only the distinct ones).

The product of its digits is 2880, while the sum is 27.

The square root of 25331481 is about 5033.0389428257. The cubic root of 25331481 is about 293.6884454696.

The spelling of 25331481 in words is "twenty-five million, three hundred thirty-one thousand, four hundred eighty-one".