25078641 has 12 divisors (see below), whose sum is σ = 38897712. Its totient is φ = 14330568.

The previous prime is 25078633. The next prime is 25078643. The reversal of 25078641 is 14687052.

It is not a de Polignac number, because 25078641 - 2³ = 25078633 is a prime.

It is not an unprimeable number, because it can be changed into a prime (25078643) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 85155 + ... + 85448.

It is an arithmetic number, because the mean of its divisors is an integer number (3241476).

Almost surely, 2^25078641 is an apocalyptic number.

25078641 is a gapful number since it is divisible by the number (21) formed by its first and last digit.

It is an amenable number.

25078641 is a deficient number, since it is larger than the sum of its proper divisors (13819071).

25078641 is a wasteful number, since it uses less digits than its factorization.

25078641 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 170620 (or 170613 counting only the distinct ones).

The product of its (nonzero) digits is 13440, while the sum is 33.

The square root of 25078641 is about 5007.8579253010. The cubic root of 25078641 is about 292.7080498060.

The spelling of 25078641 in words is "twenty-five million, seventy-eight thousand, six hundred forty-one".