7879725 has 36 divisors (see below), whose sum is σ = 16132896. Its totient is φ = 3601440.

The previous prime is 7879723. The next prime is 7879727. The reversal of 7879725 is 5279787.

7879725 is nontrivially palindromic in base 4.

It is an interprime number because it is at equal distance from previous prime (7879723) and next prime (7879727).

It is not a de Polignac number, because 7879725 - 2¹ = 7879723 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (45).

7879725 is a lucky number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (7879723) by changing a digit.

It is a polite number, since it can be written in 35 ways as a sum of consecutive naturals, for example, 927 + ... + 4076.

It is an arithmetic number, because the mean of its divisors is an integer number (448136).

Almost surely, 2^7879725 is an apocalyptic number.

7879725 is a gapful number since it is divisible by the number (75) formed by its first and last digit.

It is an amenable number.

7879725 is an abundant number, since it is smaller than the sum of its proper divisors (8253171).

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

7879725 is a wasteful number, since it uses less digits than its factorization.

7879725 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5026 (or 5018 counting only the distinct ones).

The product of its digits is 246960, while the sum is 45.

The square root of 7879725 is about 2807.0847867494. The cubic root of 7879725 is about 198.9926430114.

The spelling of 7879725 in words is "seven million, eight hundred seventy-nine thousand, seven hundred twenty-five".