101613420025 has 24 divisors (see below), whose sum is σ = 136285643480. Its totient is φ = 74709872640.

The previous prime is 101613420019. The next prime is 101613420037. The reversal of 101613420025 is 520024316101.

It is a happy number.

It can be written as a sum of positive squares in 12 ways, for example, as 1122518016 + 100490902009 = 33504^2 + 317003^2 .

It is not a de Polignac number, because 101613420025 - 2⁵ = 101613419993 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (25).

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 608232 + ... + 757081.

Almost surely, 2^101613420025 is an apocalyptic number.

It is an amenable number.

101613420025 is a deficient number, since it is larger than the sum of its proper divisors (34672223455).

101613420025 is a wasteful number, since it uses less digits than its factorization.

101613420025 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1365565 (or 1365560 counting only the distinct ones).

The product of its (nonzero) digits is 1440, while the sum is 25.

Adding to 101613420025 its reverse (520024316101), we get a palindrome (621637736126).

The spelling of 101613420025 in words is "one hundred one billion, six hundred thirteen million, four hundred twenty thousand, twenty-five".