1025531615601 has 12 divisors (see below), whose sum is σ = 1568460118212. Its totient is φ = 643470817536.

The previous prime is 1025531615597. The next prime is 1025531615621. The reversal of 1025531615601 is 1065161355201.

1025531615601 is a `hidden beast` number, since 1 + 0 + 2 + 5 + 5 + 31 + 6 + 15 + 601 = 666.

It can be written as a sum of positive squares in 2 ways, for example, as 957540531600 + 67991084001 = 978540^2 + 260751^2 .

It is not a de Polignac number, because 1025531615601 - 2² = 1025531615597 is a prime.

It is not an unprimeable number, because it can be changed into a prime (1025531615621) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 3351410356 + ... + 3351410661.

It is an arithmetic number, because the mean of its divisors is an integer number (130705009851).

Almost surely, 2^{1025531615601} is an apocalyptic number.

It is an amenable number.

1025531615601 is a deficient number, since it is larger than the sum of its proper divisors (542928502611).

1025531615601 is a wasteful number, since it uses less digits than its factorization.

1025531615601 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6702821040 (or 6702821037 counting only the distinct ones).

The product of its (nonzero) digits is 27000, while the sum is 36.

The spelling of 1025531615601 in words is "one trillion, twenty-five billion, five hundred thirty-one million, six hundred fifteen thousand, six hundred one".