1025251403551 has 8 divisors (see below), whose sum is σ = 1058357239808. Its totient is φ = 992147643000.

The previous prime is 1025251403549. The next prime is 1025251403611. The reversal of 1025251403551 is 1553041525201.

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 1025251403551 - 2¹ = 1025251403549 is a prime.

It is a super-2 number, since 2×1025251403551² (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 (1025251403521) 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, 517786 + ... + 1522696.

It is an arithmetic number, because the mean of its divisors is an integer number (132294654976).

Almost surely, 2^{1025251403551} is an apocalyptic number.

1025251403551 is a deficient number, since it is larger than the sum of its proper divisors (33105836257).

1025251403551 is a wasteful number, since it uses less digits than its factorization.

1025251403551 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1037853.

The product of its (nonzero) digits is 30000, while the sum is 34.

Adding to 1025251403551 its reverse (1553041525201), we get a palindrome (2578292928752).

The spelling of 1025251403551 in words is "one trillion, twenty-five billion, two hundred fifty-one million, four hundred three thousand, five hundred fifty-one".