7499978325 has 240 divisors, whose sum is σ = 16528406400. Its totient is φ = 3291425280.

The previous prime is 7499978323. The next prime is 7499978371. The reversal of 7499978325 is 5238799947.

It is not a de Polignac number, because 7499978325 - 2¹ = 7499978323 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (63).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (7499978323) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 239 ways as a sum of consecutive naturals, for example, 50335351 + ... + 50335499.

It is an arithmetic number, because the mean of its divisors is an integer number (68868360).

Almost surely, 2^7499978325 is an apocalyptic number.

7499978325 is a gapful number since it is divisible by the number (75) formed by its first and last digit.

It is an amenable number.

7499978325 is an abundant number, since it is smaller than the sum of its proper divisors (9028428075).

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

7499978325 is a wasteful number, since it uses less digits than its factorization.

7499978325 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 298 (or 284 counting only the distinct ones).

The product of its digits is 34292160, while the sum is 63.

The square root of 7499978325 is about 86602.4152376826. The cubic root of 7499978325 is about 1957.4319349214.

The spelling of 7499978325 in words is "seven billion, four hundred ninety-nine million, nine hundred seventy-eight thousand, three hundred twenty-five".