1151561061525 has 48 divisors (see below), whose sum is σ = 2176660684800. Its totient is φ = 526244372160.

The previous prime is 1151561061517. The next prime is 1151561061611. The reversal of 1151561061525 is 5251601651511.

It is not a de Polignac number, because 1151561061525 - 2³ = 1151561061517 is a prime.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 1130536 + ... + 1892414.

It is an arithmetic number, because the mean of its divisors is an integer number (45347097600).

Almost surely, 2^{1151561061525} is an apocalyptic number.

1151561061525 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

1151561061525 is a deficient number, since it is larger than the sum of its proper divisors (1025099623275).

1151561061525 is a wasteful number, since it uses less digits than its factorization.

1151561061525 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 764778 (or 764773 counting only the distinct ones).

The product of its (nonzero) digits is 45000, while the sum is 39.

The spelling of 1151561061525 in words is "one trillion, one hundred fifty-one billion, five hundred sixty-one million, sixty-one thousand, five hundred twenty-five".