99400725504 has 176 divisors, whose sum is σ = 294821058240. Its totient is φ = 33083596800.

The previous prime is 99400725503. The next prime is 99400725509. The reversal of 99400725504 is 40552700499.

99400725504 is a `hidden beast` number, since 9 + 94 + 0 + 0 + 7 + 2 + 550 + 4 = 666.

It is a self number, because there is not a number n which added to its sum of digits gives 99400725504.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (99400725503) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 21369579 + ... + 21374229.

Almost surely, 2^99400725504 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 99400725504, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (147410529120).

99400725504 is an abundant number, since it is smaller than the sum of its proper divisors (195420332736).

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

99400725504 is a wasteful number, since it uses less digits than its factorization.

99400725504 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5453 (or 5429 counting only the distinct ones).

The product of its (nonzero) digits is 453600, while the sum is 45.

The spelling of 99400725504 in words is "ninety-nine billion, four hundred million, seven hundred twenty-five thousand, five hundred four".