1025123302151 has 4 divisors (see below), whose sum is σ = 1103978940792. Its totient is φ = 946267663512.

The previous prime is 1025123302139. The next prime is 1025123302169. The reversal of 1025123302151 is 1512033215201.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1025123302151 is a prime.

It is a super-2 number, since 2×1025123302151² (a number of 25 digits) contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 1025123302151.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1025123302751) 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, 39427819301 + ... + 39427819326.

It is an arithmetic number, because the mean of its divisors is an integer number (275994735198).

Almost surely, 2^{1025123302151} is an apocalyptic number.

1025123302151 is a deficient number, since it is larger than the sum of its proper divisors (78855638641).

1025123302151 is an equidigital number, since it uses as much as digits as its factorization.

1025123302151 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 78855638640.

The product of its (nonzero) digits is 1800, while the sum is 26.

Adding to 1025123302151 its reverse (1512033215201), we get a palindrome (2537156517352).

The spelling of 1025123302151 in words is "one trillion, twenty-five billion, one hundred twenty-three million, three hundred two thousand, one hundred fifty-one".