7900429725 has 18 divisors (see below), whose sum is σ = 14150547866. Its totient is φ = 4213562400.

The previous prime is 7900429709. The next prime is 7900429727. The reversal of 7900429725 is 5279240097.

It can be written as a sum of positive squares in 3 ways, for example, as 2734557849 + 5165871876 = 52293^2 + 71874^2 .

It is not a de Polignac number, because 7900429725 - 2⁴ = 7900429709 is a prime.

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

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (7900429727) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 17 ways as a sum of consecutive naturals, for example, 17556286 + ... + 17556735.

Almost surely, 2^7900429725 is an apocalyptic number.

7900429725 is a gapful number since it is divisible by the number (75) formed by its first and last digit.

It is an amenable number.

7900429725 is a deficient number, since it is larger than the sum of its proper divisors (6250118141).

7900429725 is a wasteful number, since it uses less digits than its factorization.

7900429725 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 35113037 (or 35113029 counting only the distinct ones).

The product of its (nonzero) digits is 317520, while the sum is 45.

The square root of 7900429725 is about 88884.3615322741. The cubic root of 7900429725 is about 1991.6678126154.

The spelling of 7900429725 in words is "seven billion, nine hundred million, four hundred twenty-nine thousand, seven hundred twenty-five".