1025426455021 has 8 divisors (see below), whose sum is σ = 1040841834624. Its totient is φ = 1010014325760.

The previous prime is 1025426454979. The next prime is 1025426455073. The reversal of 1025426455021 is 1205546245201.

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 1025426455021 - 2²⁹ = 1024889584109 is a prime.

It is a super-2 number, since 2×1025426455021² (a number of 25 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1025426485021) 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, 173125 + ... + 1442506.

It is an arithmetic number, because the mean of its divisors is an integer number (130105229328).

Almost surely, 2^{1025426455021} is an apocalyptic number.

It is an amenable number.

1025426455021 is a deficient number, since it is larger than the sum of its proper divisors (15415379603).

1025426455021 is an equidigital number, since it uses as much as digits as its factorization.

1025426455021 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1625171.

The product of its (nonzero) digits is 96000, while the sum is 37.

The spelling of 1025426455021 in words is "one trillion, twenty-five billion, four hundred twenty-six million, four hundred fifty-five thousand, twenty-one".