125132520451 has 4 divisors (see below), whose sum is σ = 131718442600. Its totient is φ = 118546598304.

The previous prime is 125132520439. The next prime is 125132520463. The reversal of 125132520451 is 154025231521.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 154025231521 = 7 ⋅22003604503.

It is an interprime number because it is at equal distance from previous prime (125132520439) and next prime (125132520463).

It is a cyclic number.

It is not a de Polignac number, because 125132520451 - 2¹¹ = 125132518403 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (125132520431) 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, 3292961046 + ... + 3292961083.

It is an arithmetic number, because the mean of its divisors is an integer number (32929610650).

Almost surely, 2^125132520451 is an apocalyptic number.

125132520451 is a deficient number, since it is larger than the sum of its proper divisors (6585922149).

125132520451 is an equidigital number, since it uses as much as digits as its factorization.

125132520451 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6585922148.

The product of its (nonzero) digits is 12000, while the sum is 31.

Adding to 125132520451 its reverse (154025231521), we get a palindrome (279157751972).

The spelling of 125132520451 in words is "one hundred twenty-five billion, one hundred thirty-two million, five hundred twenty thousand, four hundred fifty-one".