25969140 has 48 divisors (see below), whose sum is σ = 80794560. Its totient is φ = 6924960.

The previous prime is 25969129. The next prime is 25969147. The reversal of 25969140 is 4196952.

It is a Harshad number since it is a multiple of its sum of digits (36).

It is a junction number, because it is equal to n+sod(n) for n = 25969095 and 25969104.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (25969147) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 23506 + ... + 24585.

It is an arithmetic number, because the mean of its divisors is an integer number (1683220).

Almost surely, 2^25969140 is an apocalyptic number.

25969140 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

25969140 is an abundant number, since it is smaller than the sum of its proper divisors (54825420).

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

25969140 is a wasteful number, since it uses less digits than its factorization.

25969140 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 48109 (or 48101 counting only the distinct ones).

The product of its (nonzero) digits is 19440, while the sum is 36.

The square root of 25969140 is about 5095.9925431657. The cubic root of 25969140 is about 296.1323519393.

The spelling of 25969140 in words is "twenty-five million, nine hundred sixty-nine thousand, one hundred forty".