6949787700025 has 27 divisors (see below), whose sum is σ = 8925638027943. Its totient is φ = 5367816619200.

The previous prime is 6949787699971. The next prime is 6949787700041. The reversal of 6949787700025 is 5200077879496.

The square root of 6949787700025 is 2636245.

It is a perfect power (a square), and thus also a powerful number.

It can be written as a sum of positive squares in 13 ways, for example, as 774940414249 + 6174847285776 = 880307^2 + 2484924^2 .

It is not a de Polignac number, because 6949787700025 - 2¹¹ = 6949787697977 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 6949787700025.

It is an unprimeable number.

It is a polite number, since it can be written in 26 ways as a sum of consecutive naturals, for example, 382246435 + ... + 382264615.

Almost surely, 2^{6949787700025} is an apocalyptic number.

6949787700025 is the 2636245-th square number.

6949787700025 is the 1318123-rd centered octagonal number.

It is an amenable number.

6949787700025 is a deficient number, since it is larger than the sum of its proper divisors (1975850327918).

6949787700025 is an frugal number, since it uses more digits than its factorization.

6949787700025 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 36430 (or 18215 counting only the distinct ones).

The product of its (nonzero) digits is 53343360, while the sum is 64.

Multiplying 6949787700025 by its sum of digits (64), we get a square (444786412801600 = 21089960²).

The spelling of 6949787700025 in words is "six trillion, nine hundred forty-nine billion, seven hundred eighty-seven million, seven hundred thousand, twenty-five".