201511362725 has 12 divisors (see below), whose sum is σ = 251168780196. Its totient is φ = 160373806080.

The previous prime is 201511362719. The next prime is 201511362751. The reversal of 201511362725 is 527263115102.

It can be written as a sum of positive squares in 6 ways, for example, as 10382387236 + 191128975489 = 101894^2 + 437183^2 .

It is not a de Polignac number, because 201511362725 - 2²⁶ = 201444253861 is a prime.

It is a Duffinian number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 20877182 + ... + 20886831.

It is an arithmetic number, because the mean of its divisors is an integer number (20930731683).

Almost surely, 2^201511362725 is an apocalyptic number.

201511362725 is a gapful number since it is divisible by the number (25) formed by its first and last digit.

It is an amenable number.

201511362725 is a deficient number, since it is larger than the sum of its proper divisors (49657417471).

201511362725 is a wasteful number, since it uses less digits than its factorization.

201511362725 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 41764216 (or 41764211 counting only the distinct ones).

The product of its (nonzero) digits is 25200, while the sum is 35.

Adding to 201511362725 its reverse (527263115102), we get a palindrome (728774477827).

The spelling of 201511362725 in words is "two hundred one billion, five hundred eleven million, three hundred sixty-two thousand, seven hundred twenty-five".