1025243510021 has 8 divisors (see below), whose sum is σ = 1058401784064. Its totient is φ = 992090604960.

The previous prime is 1025243509993. The next prime is 1025243510023. The reversal of 1025243510021 is 1200153425201.

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 1025243510021 - 2¹⁸ = 1025243247877 is a prime.

It is a super-2 number, since 2×1025243510021² (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 (1025243510023) 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, 952355 + ... + 1719728.

It is an arithmetic number, because the mean of its divisors is an integer number (132300223008).

Almost surely, 2^{1025243510021} is an apocalyptic number.

It is an amenable number.

1025243510021 is a deficient number, since it is larger than the sum of its proper divisors (33158274043).

1025243510021 is a wasteful number, since it uses less digits than its factorization.

1025243510021 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2684491.

The product of its (nonzero) digits is 2400, while the sum is 26.

Adding to 1025243510021 its reverse (1200153425201), we get a palindrome (2225396935222).

The spelling of 1025243510021 in words is "one trillion, twenty-five billion, two hundred forty-three million, five hundred ten thousand, twenty-one".