1025421075494 has 8 divisors (see below), whose sum is σ = 1575647018568. Its totient is φ = 500205402640.

The previous prime is 1025421075493. The next prime is 1025421075559. The reversal of 1025421075494 is 4945701245201.

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

It is a super-3 number, since 3×1025421075494³ (a number of 37 digits) contains 333 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1025421075493) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 6252567452 + ... + 6252567615.

It is an arithmetic number, because the mean of its divisors is an integer number (196955877321).

Almost surely, 2^{1025421075494} is an apocalyptic number.

1025421075494 is a deficient number, since it is larger than the sum of its proper divisors (550225943074).

1025421075494 is a wasteful number, since it uses less digits than its factorization.

1025421075494 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 12505135110.

The product of its (nonzero) digits is 403200, while the sum is 44.

The spelling of 1025421075494 in words is "one trillion, twenty-five billion, four hundred twenty-one million, seventy-five thousand, four hundred ninety-four".