5425623121 has 4 divisors (see below), whose sum is σ = 5425814592. Its totient is φ = 5425431652.

The previous prime is 5425623107. The next prime is 5425623143. The reversal of 5425623121 is 1213265245.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 5425623121 - 2²¹ = 5423525969 is a prime.

It is a super-2 number, since 2×5425623121² = 58874772502259561282, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (5425623191) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 43861 + ... + 113026.

It is an arithmetic number, because the mean of its divisors is an integer number (1356453648).

Almost surely, 2^5425623121 is an apocalyptic number.

It is an amenable number.

5425623121 is a deficient number, since it is larger than the sum of its proper divisors (191471).

5425623121 is a wasteful number, since it uses less digits than its factorization.

5425623121 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 191470.

The product of its digits is 14400, while the sum is 31.

The square root of 5425623121 is about 73658.8292127970. The cubic root of 5425623121 is about 1757.1811714017.

Adding to 5425623121 its reverse (1213265245), we get a palindrome (6638888366).

It can be divided in two parts, 54256 and 23121, that added together give a palindrome (77377).

The spelling of 5425623121 in words is "five billion, four hundred twenty-five million, six hundred twenty-three thousand, one hundred twenty-one".