1262625426661 has 8 divisors (see below), whose sum is σ = 1263608100000. Its totient is φ = 1261642916880.

The previous prime is 1262625426653. The next prime is 1262625426703. The reversal of 1262625426661 is 1666245262621.

It is a happy number.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 1262625426661 - 2³ = 1262625426653 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1262625426761) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 18672090 + ... + 18739588.

It is an arithmetic number, because the mean of its divisors is an integer number (157951012500).

Almost surely, 2^{1262625426661} is an apocalyptic number.

It is an amenable number.

1262625426661 is a deficient number, since it is larger than the sum of its proper divisors (982673339).

1262625426661 is a wasteful number, since it uses less digits than its factorization.

1262625426661 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 81779.

The product of its digits is 2488320, while the sum is 49.

The spelling of 1262625426661 in words is "one trillion, two hundred sixty-two billion, six hundred twenty-five million, four hundred twenty-six thousand, six hundred sixty-one".