1156978624725 has 120 divisors (see below), whose sum is σ = 2671947609408. Its totient is φ = 480822220800.

The previous prime is 1156978624723. The next prime is 1156978624729. The reversal of 1156978624725 is 5274268796511.

It is a happy number.

1156978624725 is a `hidden beast` number, since 1 + 1 + 569 + 7 + 8 + 6 + 2 + 47 + 25 = 666.

It is not a de Polignac number, because 1156978624725 - 2¹ = 1156978624723 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 (1156978624723) by changing a digit.

It is a polite number, since it can be written in 119 ways as a sum of consecutive naturals, for example, 3554124 + ... + 3865973.

Almost surely, 2^{1156978624725} is an apocalyptic number.

1156978624725 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

1156978624725 is an abundant number, since it is smaller than the sum of its proper divisors (1514968984683).

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

1156978624725 is a wasteful number, since it uses less digits than its factorization.

1156978624725 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7420137 (or 7420123 counting only the distinct ones).

The product of its digits is 50803200, while the sum is 63.

The spelling of 1156978624725 in words is "one trillion, one hundred fifty-six billion, nine hundred seventy-eight million, six hundred twenty-four thousand, seven hundred twenty-five".