2125261612642 has 16 divisors (see below), whose sum is σ = 3643335433152. Its totient is φ = 910818952560.

The previous prime is 2125261612633. The next prime is 2125261612751. The reversal of 2125261612642 is 2462161625212.

It is a junction number, because it is equal to n+sod(n) for n = 2125261612595 and 2125261612604.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1371417 + ... + 2476147.

It is an arithmetic number, because the mean of its divisors is an integer number (227708464572).

Almost surely, 2^{2125261612642} is an apocalyptic number.

2125261612642 is a deficient number, since it is larger than the sum of its proper divisors (1518073820510).

2125261612642 is a wasteful number, since it uses less digits than its factorization.

2125261612642 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1242153.

The product of its digits is 138240, while the sum is 40.

The spelling of 2125261612642 in words is "two trillion, one hundred twenty-five billion, two hundred sixty-one million, six hundred twelve thousand, six hundred forty-two".