125220423254 has 4 divisors (see below), whose sum is σ = 187830634884. Its totient is φ = 62610211626.

The previous prime is 125220423227. The next prime is 125220423269. The reversal of 125220423254 is 452324022521.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 452324022521 = 7 ⋅64617717503.

It is a self number, because there is not a number n which added to its sum of digits gives 125220423254.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 31305105812 + ... + 31305105815.

It is an arithmetic number, because the mean of its divisors is an integer number (46957658721).

Almost surely, 2^125220423254 is an apocalyptic number.

125220423254 is a deficient number, since it is larger than the sum of its proper divisors (62610211630).

125220423254 is an equidigital number, since it uses as much as digits as its factorization.

125220423254 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 62610211629.

The product of its (nonzero) digits is 38400, while the sum is 32.

Adding to 125220423254 its reverse (452324022521), we get a palindrome (577544445775).

The spelling of 125220423254 in words is "one hundred twenty-five billion, two hundred twenty million, four hundred twenty-three thousand, two hundred fifty-four".