78469925 has 12 divisors (see below), whose sum is σ = 97481856. Its totient is φ = 62660400.

The previous prime is 78469921. The next prime is 78469949. The reversal of 78469925 is 52996487.

It is a happy number.

It is not a de Polignac number, because 78469925 - 2² = 78469921 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (78469921) 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, 12590 + ... + 17760.

It is an arithmetic number, because the mean of its divisors is an integer number (8123488).

Almost surely, 2^78469925 is an apocalyptic number.

It is an amenable number.

78469925 is a deficient number, since it is larger than the sum of its proper divisors (19011931).

78469925 is a wasteful number, since it uses less digits than its factorization.

78469925 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5788 (or 5783 counting only the distinct ones).

The product of its digits is 1088640, while the sum is 50.

The square root of 78469925 is about 8858.3251803036. The cubic root of 78469925 is about 428.1221973994.

It can be divided in two parts, 7846 and 9925, that added together give a palindrome (17771).

The spelling of 78469925 in words is "seventy-eight million, four hundred sixty-nine thousand, nine hundred twenty-five".