5425942921 has 27 divisors (see below), whose sum is σ = 6715783719. Its totient is φ = 4370159808.

The previous prime is 5425942919. The next prime is 5425942969. The reversal of 5425942921 is 1292495245.

The square root of 5425942921 is 73661.

It is a perfect power (a square), and thus also a powerful number.

It can be written as a sum of positive squares in only one way, i.e., 4224350025 + 1201592896 = 64995^2 + 34664^2 .

It is not a de Polignac number, because 5425942921 - 2¹ = 5425942919 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (5425942421) by changing a digit.

It is a polite number, since it can be written in 26 ways as a sum of consecutive naturals, for example, 8765350 + ... + 8765968.

Almost surely, 2^5425942921 is an apocalyptic number.

5425942921 is the 73661-st square number.

5425942921 is the 36831-st centered octagonal number.

It is an amenable number.

5425942921 is a deficient number, since it is larger than the sum of its proper divisors (1289840798).

5425942921 is an frugal number, since it uses more digits than its factorization.

5425942921 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1286 (or 643 counting only the distinct ones).

The product of its digits is 259200, while the sum is 43.

The cubic root of 5425942921 is about 1757.2156949631.

The spelling of 5425942921 in words is "five billion, four hundred twenty-five million, nine hundred forty-two thousand, nine hundred twenty-one".